HelloCircle/index.html at master · pixel5919/HelloCircle · GitHub

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<html>
<head>
	<meta charset="utf-8">
	<link rel="stylesheet" href="style.css">
	<script src="js/socket-io.js"></script>
	<script src="js/keys.js"></script>
	<script src="http://code.jquery.com/jquery-1.11.1.js"></script>
	<title>G</title>
</head>
<body onunload="disconnect()">
	<h1 id="title"></h1>
	<canvas id="field" width="1000" height="1000" ></canvas>
	<script>
		var canvas = document.getElementById("field")
		var ctx = canvas.getContext("2d")
		var socket = io()
		var id = "unknown"
		var xy = [0,0]

		socket.on("init", function(_id){
			id = _id
		})

		socket.on('draw', function(things){
			ctx.clearRect(0, 0, 1000, 1000)
			for(var x in things){
				if(x == id){
					xy[0] = things[x].x
					xy[1] = things[x].y
					ctx.beginPath()
					ctx.arc(500, 500, things[x].size, 0, 2*Math.PI)
					ctx.fillStyle = things[x].color
					ctx.fill()
					ctx.stroke()
					continue
				}
				if(things[x].x <= xy[0] + 500 && things[x].x >= xy[0] - 500 && things[x].y <= xy[1] + 500 && things[x].y >= xy[1] - 500){
					//var _x = 500 - (xy[0] - things[x].x)
					//var _y = 500 - (xy[1] - things[x].y)
					ctx.beginPath()
					ctx.arc(500 - (xy[0] - things[x].x), 500 - (xy[1] - things[x].y), things[x].size, 0, 2*Math.PI)
					ctx.fillStyle = things[x].color
					ctx.fill()
					ctx.stroke()
				}
			}
		})

		//keys//////////////////////////////////////////////
		document.addEventListener("keydown", keydown, false)
		document.addEventListener("keyup", keyup, false)
		document.addEventListener("keydown", function(){
			socket.emit('keys', up, left, right)
		}, false)
		document.addEventListener("keyup", function(){
			socket.emit('keys', up, left, right)
		}, false)
		////////////////////////////////////////////////////

	</script>

</body>
</html>